The fire is contained to about 5 acres, and all crews have been sent home except for about eight people who will monitor hot spots, the agency told CNN affiliate WATE.

[Original post, 12:57 a.m] The National Guard will fly in two helicopters Monday to help battle a massive wildfire that has damaged more than 30 cabins in Pigeon Forge, a mountain resort city in Tennessee.

While the state Emergency Management Agency had not received reports of casualties, the fire prompted the evacuation of about 150 people.

A wildfire jumped a road in central Florida, scorching homes and wiping out trees as it charred more than 1,900 acres, a fire official said Sunday.

Some 24 structures in Marion County had been burned by what's being called the Hopkins Prairie Fire, said U.S. Forest Service spokeswoman Susan Blake. Ten of those buildings were homes, according to a tweet from the National Weather Service.

The blaze around Ocala National Forest was 80% contained as of early Sunday evening, Blake added. About 100 local, state and federal firefighters were on site.

Four people were injured Saturday after a flash fire broke out in the ductwork of the State Department building in Washington, fire officials said.

One person was in a "life-threatening condition" and two others were in serious but non-life threatening condition at Washington Hospital Center, authorities said. The fourth person fell from a ladder and hurt his knee.

The fire broke out after 11 a.m., as construction crews were working on the premises, and was extinguished on short order, said Lon Walls, a spokesman for Washington's fire department.

Idaho officials say the popularity of a baby black¬†bear given the name Boo Boo, who was¬†rescued after being burned in a wildfire, may help remind people of the wide consequences of wildfires.

"People from all over the country have asked after the bear," Idaho Fish and Game conservation educator Evin Oneale said. "Many have asked about contributing money to offset the cub's medical treatment costs."

Boo Boo was brought to the Idaho Humane society after firefighters found him last week while battling the Mustang Complex Fire that has scorched more than¬†250,000 acres in Idaho.

‚ÄúHe‚Äôs healing nicely,‚ÄĚ Dr. Jeff Rosenthal, Director of the Idaho Humane Society said. ‚ÄúHis pads and toes are no longer bleeding and new skin is already forming on the burned portions.‚ÄĚ

Officials said the bear, which weighed 23 pounds when they first rescued it, is expected to make a full recovery. And Boo Boo is starting to act more like you'd expect of a black bear.

‚ÄúEating like a little pig, very feisty, and not very social,‚ÄĚ Rosenthal said. ‚ÄúHe charges the cage front whenever anyone gets near, trying to scare us off.‚ÄĚ

The fire grew to 36,930 acres, authorities said Monday. It had been estimated at 20,000 acres Sunday night.

The Red Cross, Humane Society and other aid groups mobilized to help evacuees while at least 400 firefighters, aided by air tankers and helicopters from as far away as Canada battled the fire about 15 miles west of Fort Collins, Colorado.

As wildfire season flares up, here's a look at how some of these dangerous events start and how much damage they've caused in the past:

About Wildfires:

Wildfires are sometimes called "wildland fires."

Wildfires can originate from a dropped match, cigarette embers, campfires, exhaust sparks from a train, or arson.

Many wildland fires are ignited by lightning.

There are no official rules, but the first responders usually name a fire after a meadow, creek, city, or type of plant they see.

Tombstone, Arizona (CNN) ‚Äď Under an unforgiving desert sun, about 60¬†determined souls gathered in a high school football field under the banner¬†of the Tombstone Shovel Brigade. They collected shovels and joined a pickup¬†truck caravan across the desert. Then they climbed two miles up a steep,¬†rocky canyon and began to move part of a mountain, one boulder at a time.

Thousands of miles away, in the nation‚Äôs capital, Tombstone‚Äôs congressman¬†and the city archivist tried to move a bureaucratic mountain, too, during¬†hearings before a subcommittee of the House Natural Resources Committee.

Tombstone, as CNN has reported, is in the midst of a court battle¬†with the U.S. Forest Service. At issue is whether Tombstone can take heavy equipment into federally protected wilderness.

Tombstone is trying to repair a 26-mile pipeline that has brought mountain¬†spring water into the city since 1881. The pipeline was damaged during last¬†summer‚Äôs Monument Fire and floods that brought mud and boulders crashing¬†down the denuded mountainside.

The city sued the Forest Service in December, accusing the agency of dragging¬†its feet during a state of emergency. The courts have¬†turned down the city‚Äôs request for an emergency injunction, and so the¬†battle has entered a new phase in the court of public opinion.

Frustrated with the slow pace of the repairs, Tombstone‚Äôs supporters created¬†the nonprofit Tombstone Shovel Brigade a couple of months ago. They are¬†helped by the organizers of the Jarbidge Shovel Brigade, which used¬†volunteer muscle power to move a boulder and reopen a mountain road on¬†federal wilderness in 2000.

Tombstone has become the poster city for a sweeping resurgence of the¬†Sagebrush Rebellion in some Western states. This time, Utah state Rep. Ken¬†Ivory explained, the rebellion is not fueled by oilmen and cattle ranchers.

Instead, local governments are behind the movement to push back against what they say is the federal government‚Äôs treatment of them as ‚Äúsubmissive subdivisions.‚ÄĚ

U.S. Rep. Jeff Flake has introduced H.R. 5971, the Emergency Water Supply¬†Restoration Act, which proposes to set aside Forest Service restrictions¬†against the use of construction equipment during state-declared water¬†emergencies. Flake and Nancy Sosa, the city‚Äôs archivist, were among the¬†witnesses who testified Friday.

‚ÄúThe unforeseen consequences of federal laws and regulations threaten to do¬†something outlaws, economic busts, and the Arizona desert couldn‚Äôt: Kill the¬†town too tough to die,‚ÄĚ Flake said. Tombstone, population 1,400, is a¬†throwback to the Old West and is famous for the 30-second gunfight at the¬†O.K. Corral, which is re-enacted for tourists twice a day.

‚ÄúWithout water, the most precious commodity in the desert, Tombstone will¬†cease to exist,‚ÄĚ Sosa said. She told the committee that Tombstone burned to¬†the ground twice before the waterline was built.

There are some men and women who¬†don't fear danger or even¬†risking their lives¬†at work.¬†For some, the adrenaline rush of pushing themselves to the edge keeps their jobs interesting and rewarding.¬† CNN.com has collected video of some of these¬†risk-takers¬†putting their lives on the line. Watch as¬†an alligator hunter, firefighter and window washer¬†are caught in precarious positions that will put a chill¬†up your spine.

Need a job? Texas needs gator hunters

Texas officials say the state needs more alligator hunters to provide his or her services.Watch as hunters trap alligators and discover why Texas is in desperate need for more people to capture them.

Fireman: Roof under him 'just dropped'

A life and death moment for Michigan fighters caught on tape, as a roof collapsed under them. WXYZ reports.Watch what saved a firefighter from falling to his death inside a burning building.

Window washer saved from fall

A Seattle man is safe on the ground after hanging from a building. KOMO reports.Find out how long it took for someone to discover this window washer hanging from a high-rise building.

Two Philadelphia firefighters died early Monday and three others were injured when the wall of a building collapsed as they battled a five-alarm fire, officials said.

The collapse occurred about 5:50 a.m. as the five were inside a furniture store, said Deputy Fire Commissioner Ernest Hargett Jr.

Four of the firefighters were trapped inside, he said, but the fifth was able to get free. Firefighters were forced to move brick and timber by hand and cut through some materials to rescue the others, Hargett said.

Peruvian Health Minister Alberto Tejada visited Sunday surviving victims of a fire at a rehabilitation center, promising to crack down on treatment facilities that operate "outside the law."

Twenty-seven people were killed and others were wounded when a fire broke out Saturday at the Christ is Love center in Lima.

"You can supervise someone who has formally asked for permission to operate rehabilitation centers, but you're limited in how you can supervise someone who is hiding," Tejada said.

Speaking at a hospital, the minister called for severe sanctions against those responsible for running Christ is Love, which operated "outside the law," he said. Tejada did not specify what laws the facility violated.

One person died and nine others, including two firefighters, were injured in a fire early Sunday in a Chicago high-rise, according to the city's fire department.

The body of the 32-year-old resident, who lived on the 12th floor, was found in an open elevator, said Chicago Fire Department spokesman Larry Langford.

The elevator had superheated air, which could have been up to 1,000 degrees "at head level where she was," Langford said.

Firefighters received a call just after 2 a.m. Sunday about a fire on the 12th floor of the building. In the apartment where the fire broke out, the resident left the door open hoping their pets would escape, which caused the hallway to fill with smoke and fire, he said.

"These young people on Wall Street are giving voice to many of the problems that working people in America have been confronting over the last several years," Larry Hanley, international president of the Amalgamated Transit Union, which has 20,000 member in the New York area, told CNN.

Transport Workers Union Local 100 spokesman Jim Gannon said the Occupy Wall Street movement, which denounces social inequities in the financial system and draws inspiration from the Arab Spring revolutions in Africa and the Middle East, has advanced issues that unions typically support.

Meanwhile, a Twitter account called Occupy Boston mentions a city-wide college walkout there Wednesday. The Massachusetts Nurses Association says "hundreds" of the city's nurses will rally with the Occupy Boston protestors on Wednesday. The Nurses Association says the protest will be part of the opening day activities for a national nursing convention being held in Boston.

Halloween costumes: Charlie Sheen, the former star of TV's "Two and a Half Men" who was fired from the popular sitcom earlier this year, is the most popular Halloween costume for 2011, CNNMoney reports.

Top choices for women include Lady Gaga, Katy Perry and Snooki from the "Jersey Shore," the report says, citing figures from Spirit Halloween, the country's largest seasonal Halloween retailer.

As for kids' costumes, expect to be seeing a lot of Angry Birds on your doorstep on Halloween night, the report says.

North Korea defectors: Nine possible North Korean defectors who sailed to Japan were moved to a refugee facility in the southern part of the country Wednesday afternoon, according to government officials.

Japanese Chief Cabinet Secretary Osamu Fujiwara said the nine people would be temporarily held at an immigration facility. Earlier in the day, Fujiwara disputed local reports that they would be sent to South Korea.

The small wooden boat carrying nine men, women and children onboard claiming they were from North Korea was spotted off Japan's western coast Tuesday morning.

A fisherman saw the boat drifting about 25 kilometers (15 miles) off the coast of Noto peninsula of Ishikawa prefecture and reported it to authorities.

It is rare for North Korean defectors to sail to Japan's coast. According to coast guard records, there have been only two other cases.

Minnesota Gov. Mark Dayton called in National Guard helicopters to assist firefighters as the Pagami Creek fire, in the remote Superior National Forest, spread from about 11,000 acres on Monday to more than 100,000 by Tuesday afternoon, said Doug Anderson, a spokesman for the firefighting effort.

The blaze started in mid-August after a lightning strike, but jumped about 16 miles eastward on Monday - "unprecedented for northern Minnesota," said Lisa Radosevich-Craig, another spokeswoman for the fire command.

No injuries were reported and no buildings had been destroyed, but 36 homes in the nearby community of Isabella were evacuated as a precaution, she said.

Thailand floods: Heavy rains¬† and flooding have killed at least 87 people in Thailand in recent months, local authorities said.

The deaths occurred between July 29 and September 12, according to the Interior Ministry.

Flooding is still affecting 16 provinces, with Phichit¬†¬† in the north among the hardest-hit.

Twenty-three people died in¬† Phichit province, mostly from drowning, according to officials.

Texas needs an immediate disaster declaration from President Barack Obama allowing access to heavy equipment and other assistance to help battle wildfires burning across the state, Lt. Gov. David Dewhurst said.

The White House has not responded to the state's previous request, Dewhurst contends, and "we need help yesterday."

There was no immediate response from the White House.

A disaster declaration would give the state access to heavy equipment, personnel, supplies and other support that would help it respond after nearly 300 consecutive days of wildfires, Dewhurst said.

Obama has approved a limited disaster declaration for fires in April and May.

"But this problem has been ongoing since January," Dewhurst said. "And if anything it's gotten worse."

Texas fire: Authorities were working on plans Friday to return home residents forced to flee a wildfire in northern Texas, a day after firefighters made progress battling the blaze that destroyed dozens of homes.

The blaze in Palo Pinto County scorched 6,200 acres by Thursday, according to the Texas Forest Service. The fire is burning near the resort of Possum Kingdom Lake, near the town of Brad, about 100 miles west of Dallas.

"We feel much better about this fire today" as the blaze is now 50% contained, said John Nichols, a spokesman for the Forest Service.

He said evacuations were lifted for some residents forced to evacuate the fire, which was driven by high temperatures and dry winds.

Clemens' trial: A judge will hold a hearing Friday to consider whether former Major League pitcher Roger Clemens should be retried for allegedly lying to Congress.

The case against Clemens - who is accused of one count of obstruction of Congress, three counts of making false statements and two counts of perjury - was declared a mistrial in July after evidence previously ruled inadmissable was shown in court.

U.S. District Court Judge Reggie Walton will consider how to resolve the case at Friday's hearing in Washington.

Casey Anthony: Casey Anthony's attorneys will be in court Friday fighting a motion by prosecutors to have her¬† reimburse the costs of¬† the investigation of her daughter's disappearance¬† and death.

Court documents filed by the state attorney's office and law¬† enforcement agencies indicate those costs are more than $350,000.

It is unclear whether Anthony will be at the hearing Friday in front of Orange County Chief Judge Belvin Perry Jr.

Anthony has been in seclusion since¬† her July acquittal on murder charges in the 2008 death of her¬† 2-year-old daughter and her subsequent release from jail.

But¬† in the same case, a Florida jury convicted her on four misdemeanor¬† counts of providing false information to law enforcement officers.

Prosecutors have cited a Florida law that allows the state to fine defendants in criminal cases to recoup money spent.

Pacific surf: While the National Hurricane Center watches Hurricane Katia in the Atlantic and a tropical disturbance in the Gulf of Mexico, forecasters on the West Coast are warning of high waves and dangerous riptides on southwest facing beaches.

Waves of up to 11 feet could pound Southern California beaches from San Luis Obispo south to San Diego, the National Weather Service said.

"The surf may cause hazards for anyone entering the water," the weather service's forecast said.

The high waves are the result of a winter storm off the coast of New Zealand whose rough seas are now being felt across the Pacific.

Big waves have been pounding Hawaii since Tuesday, CNN affiliate KHNL reports, and forecasters say 8-to-12-foot waves can be expected in the islands today.

Oklahoma fires: One of two wildfires burning in Oklahoma City on Wednesday pushed north toward suburban Edmond, illuminating the windy night sky with spirals of flame and flying embers.

The fire broke out Tuesday in the less densely populated northeast Oklahoma City and was moving in a northerly direction toward more largely residential, Edmond Fire Chief Tim Wheeler said.

"The winds have shifted a bit," Wheeler said. "It's current path it's going to travel through a heavily wooded area, which will allow the fire to grow in intensity."

He said it is hoped the fire can be stopped before it crosses Interstate 44 to the southeast of Edmond, but the department had already initiated its Code Red system, which autodials residents' telephone numbers encouraging them to evacuate.

Money for Libya: The British government has started delivering money that it unfroze to a bank in Libya, the foreign secretary said in a statement Wednesday.

The Royal Air Force delivered 280 million dinars (about 140 million pounds) to the Central Bank of Libya in Benghazi, the statement said.

The money is among billions of dollars ordered frozen by the United Nations when the crisis began.

The money "will be used to pay the wages of Libyan public sector employees, including nurses, doctors, teachers and police officers," the statement said. It also will be used to pay for medicines and food.

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